carotid body
Quick Summary
The carotid body is a small cluster of vascular tissue located near the carotid sinus. It functions as a chemoreceptor, meaning it detects changes in the blood, specifically its oxygen content. This detection is crucial for regulating breathing.1
The carotid body is part of the human respiratory system's control mechanism. It works alongside other chemoreceptors to send signals to the brain's respiratory centers in the hindbrain. When oxygen levels in the arterial blood drop (hypoxia), the carotid bodies are stimulated. They communicate with the brainstem via sensory nerve fibers that travel with the glossopharyngeal nerve. This stimulation leads to adjustments in breathing rate and depth to help maintain adequate oxygen levels.23
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human respiratory systemPeripheral chemoreceptorsThe two carotid bodies are small organs located in the neck at the bifurcation of each of the two common carotid arteries into the internal and external carotid arteries. This organ is extraordinarily well perfused and responds to changes in the partial pressure of oxygen in the…
Read MoreThe two carotid bodies are small organs located in the neck at the bifurcation of each of the two common carotid arteries into the internal and external carotid arteries. This organ is extraordinarily well perfused and responds to changes in the partial pressure of oxygen in the…
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…in two small nodules, the carotid bodies, attached to the division of the carotid arteries on either side of the neck. As the oxygen deprivation persists, the carotid bodies enlarge but become less sensitive to the lack of oxygen. The low oxygen partial pressure in the lung is associated with…
Read More…in two small nodules, the carotid bodies, attached to the division of the carotid arteries on either side of the neck. As the oxygen deprivation persists, the carotid bodies enlarge but become less sensitive to the lack of oxygen. The low oxygen partial pressure in the lung is associated with…
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